Automobile alarm system



Feb, 26 @2 10 R 31 5 VARLEY AUTOMOBILE ALARM SYSTEM Filed Sm. 1920 z? 73 77 I j? Ill 7/ i E g 72 5 W f T E OR.

ATTORNEYS.

Patented Feb. 26, 1924.

RICHARD VARLEY, 0E ENGLEWOOD,- NEW JERSEY, ASSIGNOR TO vARIiEY DUPLEX MAGNET COMPANY, A CORPORATION OF NEW JERSEY.

AUTOMOBILE ALARM SYSTEM.

Applicatim filed September 9, 1920. Serial No. 4Q9,134.

' while the-engine is still'and no current is being generated, in order to avoid the accidental draining of the battery. In the embodiment of my invention which I have selected for illustration the alarm is shown as both an audible and visual si nal, but it is manifest that the character oI the signal is discretionary.

In accordance with my invention, I provide a suitable indicator which is electrically operated and is arranged to be closed through the battery when the switch controlling the ignition is closed, unless the engine is running and the generator issupplying current to the battery, in which event a suitable electro-magnetic device energized by the generated current functions to incapacitate the indicator.

The indicator may well be a make-andbreak device similar to the ordinary buzzer or electric bell, and a convenient way of incapacitating the indicator by-means of the generated current, is to employ the generated current to energize the electro-magnet of the indicator and hold the armature in its attractedposition so long asthe engine is running. A separate magnet winding may be employed for this purpose or a single winding may be used by providing.

a back contact for the armature which, when closed, will connect the magnetwinding into the generator circuit.

I shall now describe the illustrated embodiment of my invention and shall thereafter point out my invention in claims.

The drawing is a diagrammatic representation of one embodiment of my invention.

The generator G is driven by the vehicle engine (not shown) in the usual way, and after the automatic switch S is closed the generator supplies a charging current to the the electro-magnet 7 and the wire 3, battery B, ground, switch S and wire 4. The switch 5 controls the connection between battery lead 3 and wire 6 leading to the ignition coil I. Connected in parallelvwith the ignition is the alarm circuit which is closed unless held open by the generated current, and this alarm circuit will now be described.

The vibrating alarm device consists of ivoted armature 8 and the magnet win ing 9 which has one end connected to the fixed contact of the switch 5 through the wire 10, and has its other end connected to the contact 11 on the armature 8 which can be through the retractile spring 12 and the armature or it can be by direct connection through a flexible wire. The contact 11 on the armature cooperates with the stationary contact 13 which is grounded. It is therefore evident that when the switch 5 is closed the armature 8 will, unless restrained, vibrate or oscillate between attracted and retracted positions.

As a means for operating the signal mechamsm I have shown the armature Sas provided on its free end with a projecting leaf i 16 is so positioned as to be clear of the hammer by a small space when 'the armature is in its attracted posltion and is not vibrating, as shown in the drawing. When the armature is vibrating the inertia of the weighted finger will-cause the finger to flex after the armature stops in its attracted position and allow the hammer to continue in its movement until it strikes the sound device. .This continued movement of the finger 14 also serves to open and close a light circuit rapidly, as will now be described.

Two lights L, whichare suitably arranged on the vehicle, one, for instance, being the tail light and the other being the dash light, are arranged in multiple and have one terminal grounded while the other is connected by wire 17 to the fixed contact of switch 18. This switch contact is connected in multiple to two opposing spaced contacts 19 and 20, the connection to the contact 19 being through the wire 21 and contact 23 are so related that in the biased position of the jcontact, the two are just clear when the armature 8 is quiet in its attracted position, as shown in the drawing. It is manifest that when the armature 8 is vibrated the movement of the free end of the finger 14 will be sufiicient to cause it to strike the end of the lever 23 and thus rapidly oscillate the lever between the two contacts 19 and 20 and cause the lights to flicker, and this will serve as an additional indication to the operator at night when the switch 18 is closed.

To incapacitate the indicator when the engine is running, means are provided for utilizing the generated current to energize the magnet 7 and hold the armature in the attracted position shown in the drawings, thus holding open the contacts 11 and 13. A convenient way to do this is to provide a back contact 24 for the armaturecontrolled contact 11, which back contact is connected to the lead 1 of the generator. So long as current is being generated the magnet 7 will be continuously energized through the following circuit: from one brush of the generator through wire 1, switches 2 and 5, wire 10, winding 9, spring 12, armature 8, contacts 11 and 24, switch lever 28 and wire 4 back to the other brush of the generator. It is therefore evident that when the switches 2 and 5 are both closed and -the engine is running, the battery current will first energize the magnet 7 and the generated current will keep it energized from the instant that the armature 8 is attracted.

Also an additional winding '25 may be provided on the magnet 7 which has one end connected to the wire 10 and its other end to a wire 26 terminating in stationary contact 27, which cooperates with the switch lever 28 connected to generator lead 4. When the lever 28 is on contact 27 it is evident that the winding 25 will be connected across the generator brushes and will serve to-magnetizethe magnet and hold the armature in its attracted position as long as the engine is running. Thus either one or two windings may be used on .the magnet. If desired either the winding 25 may be dispensed with, or the back contact'24 may be dispensed with and the winding'25 be permanently connected to the wire 4.

naeaoee In either case the switch 28 would be unnecessary.

It is obvious that various modifications may be made in the construction shown in the drawing and above particularly described, within the principle and scope of my invention.

I claim: 4 v o I? For automobiles and the like, in combination with a battery and generator, an ignition circuit, means for connecting the battery in the ignition circuit, means controlled by the generator current for connecting the generator in the ignition circuit, an electrically operated indicator, means for connecting the indicator in circuit with the battery in parallel with the ignition circuit, said means including a switch having a bias to closed position, and electro-magnetic means connected to be energized by the generator and operative to open said switc 2. For automobiles and the like, in combination with a battery and generator, an ignition circuit, means for connecting, the battery in the ignition circuit, means controlled by the generator current for connecting the generator in the ignition circuit, an indicator including an electric make-and-break device, means for connecting the make-and-breaki device in closed circuit with the battery, in parallel with the ignition circuit, and electro-magnetic means'connected to be energized by the generator and arranged in control of the means connected to be energizedby the generator and operative when energized to hold the movable member of the make-andbreak device .in'circuit breaking position.

4. For automobiles and the like,-in combination with a battery and generator, an ignition circuit, means for connecting the battery in the ignition circuit, means controlled by the generator current for connecting the generator in the ignition circuit, an electro-magnetic make-andebreak device, means for connecting the make-andbreak device in closed circuit with the bat-.

tery in parallel with the igiiition circuit,

said device including an electro-magnet and a. biased armature operative to close the indicator circuit when in biased position and to open it when attracted by the magnet, and means for supplying the gen erated current to a winding on the magnet, whereby the magnet is energized and the armature retracted while the generator is being operated;

5. For automobiles and the like, in combination with a battery and generator, an

ignition circuit, means for connecting. the

battery in the ignition circuit, means controlled by the generator current for connecting the generator in the ignition Cir cuit, an electric make-and-break device,

means for connecting the make-and break device in closed circuit with the battery in parallel with the ignition circuit, said device including an electro-magnet and a. biased armature, a signal operating element carried by the armature, a signal disposed .in the path of movement of the said element as the armature vibrates, and means for supplying the generated current to a winding on the magnet, whereby the magnet is energized and the armature retracted while the generator is being operated. I

In witness whereof I hereunto subscribe my signature. i r

RICHARD VARLEY, 

